Copying-press.



No. 643,977; Patented Feb. 20; I900. .A. POBLETE Y GARIN.

COPYING PRESS.

(Application filed Apr. 10, 1599. (No Model.)

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Patented Feb. 20, I900. A. POBLETE Y .GARIN. 4

COPYING PRESS.

(Application filed Apr. 10, 1899.; Np M o 1! el 3 Sheets-Sheet 2.

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No. 643,977. I Patented F'b. 20, I900.

A. POBLETE Y GARIN.

COPYING PRESS.

(Application filed Apr. 10, 1899.) (No Model.) 3 Sheets-$heet'3,

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UNITED STATES PATENT OFFICE.

ALBERTO POBLETE Y GARIN, OF SALAMANCA, CHILE.

COPYING-PRESS.

SPECIFICATION forming part of Letters Patent No. 643,977, dated February 20, 1900.

Application filed April 10, 1899.

T aZZ whom, it may concern:

Be it known that I, ALBERTO POBLETE Y GARIN, a citizen of the Republic of Chile, and a resident of Salamanca, Chile, haveinvented certain new and useful Improvements in Copying-Presses, of which the following is a full, clear, and exact description.

My invention relates to copying-presses, and has for its object to provide a construction which will enable the operator to exert an even pressure, so as to secure a perfect and uniform copying action with a press of moderate strength, so that the apparatus may be constructed of very light weight.

My invention is therefore particularlyadapted for use as a portablecopying-press for the use of travelers.

The invention will be fully described hereinafter and the features of novelty pointed out in the appended claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure lis-a perspective view of a simple form of press constructed according to my invention. Fig. 2 is a detail view of the clamp or holder. Fig. 3 shows the compressingframe. Fig. 4 is a cross-section of the equalizing-cushion. Fig. 5 illustrates a modification. Fig. (3 is a longitudinal section of another form of my invention, the section being taken on the line 6 6 in Fig. 7. Fig. 7 is a cross-section on the line 7 7 in Fig. 6. Figs. 8 and 9 and likewise 10 and 11 are side views and front views, respectively, of still other forms of the invention. Figs. 12 and 13 are an elevation and a plan, respectively, of another copying-press constructed according to my invention. Fig. 14 is a front view of a copying-press with a plurality of equalizingcushions, and Fig. 15 is a perspective view of one of the cushions employed in the construction shown in Fig. lat. v

As illustrated by Figs. 1 to 4, the press comprises a suitable number (say three) of clamps or holders A, each having two straight members A and aconnecting-bend A These holders are adapted to be applied to a copying-book B of usual construction, the bends A fitting over the back B. Between the leaves of the book, at the place where it is de- Serial No. 712,428. (No model.)

sired to copy a letter or other document, I interpose a trilateral prismatic cushion C, filled with air orother fluid. The cushion is made of suitable strength and impermeability, according to the nature of the fluid used, and is preferably provided wit'ha tube or nipple O for filling or inflating it.

The holders A, book B, and cushion O having been put together, as shown in Fig. 1, a pressure device consisting of a compressingfraine D is slid over the holders A from the back, said frame being rectangular to embrace the book and holders. To prevent a movement of the book B, the holders may be provided with hopks A As the frame is moved forward over the diverging arms A of the holders A said arms are moved toward each other, causing a pressure to be exerted upon the book B. By the interposition of the cushion 0 the pressure is equalized, so as to be applied evenly to all parts of the page to be c0p ied. A clear and uniform copy is the result. At the same time the necessary pressure is much less than that required with the usual presses, with which an uneven pressure is obtained. As a consequence the press can be made very light, which makes it very convenient for travelers. As the press consists of separate parts taking up very little space, its convenience for traveling purposes is obviously increased.

The holders A instead of being separate might be connected by a frame similar to the frame D, but smaller than the same, or instead of the holders A, I may, as shoivn in Fig. 5, employ two boards E, preferably provided at their edges with grooves E, adapted to receive, respectively, the stationary frame F, adapted to connect the boards E at the back of the book B, and the movable compressing-frame D. I

In Figs. 6 and 7 I have shown another form of my invention, the press in this case forming part of an article of furniture. The book B, with a board E and the cushion C, is placed in a drawer F, mounted to slide in guideways G. In the path of the drawer are arranged two arms H, depending from a shaft H, journaled in the stationary body of the article of furniture and carrying an eccentric or cam H arranged to engage the board E As the drawer is pushed in the arms H will be swung to turn the cam H and depress the board E thereby making the copy in the book.

As shown in Figs. Sand 9, Iprovideaframe forming a tapering or wedge-shaped chamber, preferably by securing upon a base I uprights J and to the latter a board K, inclined relatively to the base. Rollers L are preferably provided in the opposing faces of the base and of the inclined board K. Instead of a solid board I may employ a series of rollers, forming, as it were, a skeleton board. In operation the book B, with the cushion C, is inserted at the wide end of the chamber formed between the incline K and the base I and is pushed toward the narrow end, thus applying a gradual pressure.

Another form of my invention is shown in Figs. 10 and 11. Here a top M is connected with the base I by hinges N and a suitable device is provided for pressing the top toward the base, it being'understood that the copying-book B and cushion C are placed between the top and the base. As illustrated, the compressing device consists of a link 0, hinged to the base, an arm 0, projected from the top, and a lever 0 pivoted to the link 0 and having notches engaged by the arm 0. The point of engagement may be varied, if

desired.

In Figs. 12 and 13 an inflatable cushion C is shown as located between a top frame P and an intermediate frame P, connected by hooks Q, projecting from arms Q hinged to the top frame, said hooks engaging pins P on the intermediate frame. The arms Q are connected, so as to move in unison, by longitudinal bars R and a cross-bar R, carrying a handle R The arms Q of the hooks Q are continued downward and carry at the bottom hooks Q, facing in the opposite direction to the hooks Q. The hooks Q' are adapted to engage pins 1 on a base 1 The copying-book B, with the cushion O, is adapted to be placed between the base I and the intermediate frame P. In operation the hooks Q being engaged with the pins P so that the frames P P cannot move apart, the cushion C is inflated, so as to put it under pressure. The frames P P are then placed on top of the book B, resting on the base 1 and by an appropriate movement of the handle R the hooks Q are first engaged with the pins 1 and immediately thereafter the hooks Q are disengaged from the pins P thereby allowing the inflated cushion C to press the frame P downward against the book B.

In Fig. let a top M and a base I are adapted to receive between them the cushions 0 each of which is filled with a fluid and formed on its inner side with a sheath 0 into which may be inserted one of the covers of the book B. The cushion C may be used within the book in this case also. Pressure is applied by any suitable devices for moving the top to ard the base.

It will be understood that the cushion C by itself exerts no pressure, but merely receives and transmits in a uniform manner the pressure produced by some other device; also, an increase in the size of the surface to which the pressure is to be applied will only necessitate an increase in the dimensions of the cushion, but will not necessitate an increase in the pressure to be applied, since the pressure is transmitted undiminished to all parts of the cushion, (and consequently of the surface to be subjected to pressure,) whatever its size may be. This result, I believe, will not be obtained without the interposition of the fluid-cushion serving as a pressure-transmitter.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. A copying-press consisting of a substantially wedge-shaped cushion, adapted to be interposed between the leaves of a book, and a device for exerting pressure on said book externally.

2. For use in copying-books, a pressureequalizer consisting of a substantially wedgeshaped cushion adapted to be interposed between the leaves of a book.

3. A copying-press, consisting of diverging clamps or holders adapted to embrace a copying-book, a cushion adapted to be filled with a fluid and interposed between the leaves of the book, and means for exerting pressure on said clamps externally, independently of the cushion.

4t. Acopying-press, consisting of diverging clamps or holders adapted to embrace a copying-book, a cushion adapted to be filled With a fluid and interposed between the leaves of the book, and a compressing-frame constructed to embrace, and slide upon, the diverging clamps.

5. A copying-press, consisting of diverging clamps or holders adapted to embrace a copying-book and provided with hooks at their free ends to hold the book, a cushion adapted to be filled with a fluid and interposed between the leaves of the book, and a compressing-frame constructed to slide upon the diverging clamps.

6. The combination of the diverging clamps or holders adapted to embrace a copying-book, the equalizing-cushion, and the compressingframe constructed to embrace and slide upon the diverging clamps.

ALBERTO POBLETE Y GARIN.

Vitnesses: I

JOHN LOTTA, EVERARD BOLTON MARSHALL. 

